L8 Energy Conversion

In the experiment above, what is the independent variable?

• Height of ball

• Type of ball

• Height of ball from the hand

• Height of release of ball

What is another term for independent variable?

• changed variable

• tested variable

• manipulated variable

• controlled variable

What is the actual independent variable?

• the amount of kinetic energy

• the amount of gravitational potential energy

• the number of bounces

• the height of bounces

What is the actual dependent variable?

• the amount of kinetic energy

• the amount of gravitational potential energy

• the number of bounces

• the height of bounces

Which one of the following is the correct aim beginnings of experiments with two set-ups?

• To find out how

• To find out if

• To find out which

• To see

Which one of the following is the correct aim beginnings of experiments with three or more set-ups?

• To find out how

• To find out if

• To find out which

• To see

In the above experiment, the dependent variable is

• the height of bounces

• the height of release

• the height of first and second bounces

• the height of subsequent bounces

Dropping the ball away from the wall ensures that

• the results will be valid.

• the results will be good.

• the results will be reliable.

• the results will be measurable.

When does the stored energy of the ball begin to change to movement energy?

• When the ball is released from the hand at 100cm mark.

• Each time the ball bounces back from the surface.

• Each time the ball reached maximum height when the ball bounces back into the air after 1^st bounce.

• Each time the ball is being released from the hand.

What is the purpose of ensuring there are controlled variables in an experiment?

• To ensure that it is a fair test and that other factors do not affect the results.

• To control the test .

• To keep the test accurate.

• To ensure there are control set-ups.